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How to install MCP Mermaid Validator in Claude Desktop

To install MCP Mermaid Validator in Claude Desktop, open Settings, Developer, Edit Config, paste the "mcp-mermaid-validator" block into mcpServers in claude_desktop_config.json, and restart the app.

Built from the published package · server updated 7 months ago

1. 1

   Open the config file

   In Claude Desktop, go to Settings, then Developer, then Edit Config.

2. 2

   Add the server

   Paste this into the file. If you already have servers, add the "mcp-mermaid-validator" entry inside your existing mcpServers block.

   {
     "mcpServers": {
       "mcp-mermaid-validator": {
         "command": "npx",
         "args": [
           "-y",
           "@rtuin/mcp-mermaid-validator"
         ]
       }
     }
   }

   Copy
3. 3

   Restart Claude Desktop

   Quit the app fully and open it again. The server appears under the tools icon in a new chat.

Config file: macOS: ~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

MCP servers run with your permissions. If MCP Mermaid Validator needs an API key, add it under env in the config. Check its README.

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